Ore-feeding machine



UNITED STATES PATENT EEioE.

MICHEL DILLENBURG, OF SANFRANCISCO, CALIFORNIA.

ORE-FEEDiNG MACHINE.

SPECIFICATION formingpart of Letters Patent No. 574,788, dated January5, 1897.

Application filed July 2 '7, l 8 9 6.

To aZZ whom it may concern:

Be it known that I, MICHEL DILLENBURG, a citizen of the United States,residing in the city and county of San Francisco, State of California,have invented certain new and useful Improvements in Ore-FeedingMachines; and I hereby declare the following specification and thedrawings therewith to be a full, clear, and exact description of myinvention, with the mode of constructing and applying the same.

My invention relates to what are callec orefeeding machines employed tosupply uniformly and at a predetermined rate crushed ore to stamp-millsor other crushing apparatus and to that class of ore-feeders wherein thesupply of crushed ore is discharged and distributed by means of arevolving table or platen.

My invention consist in a means of communicating intermittent rotationto the table or platen by means of reciprocating grippingjaws that actupon a circular ledge formed on the bottom of the table and in devicesto operate these gripping-jaws.

The objects of my invention are simplicity of construction, a positivebut adjustable rate of rotation and feed, and the protection of theactuating parts from grit and wear.

Referring to the drawings, these illustrate a common ore-feedin gmachine provided with my improvements.

Figure l is a front elevation; Fig. 2, a side elevation of the samemachine; Fig. 3, an edge View of the gripping-jaws; Fig. 4, a flat view,partially in section, of Fig. 3; Fig. 5, a fiat view on top of thegripping-jaws.

Similar letters of reference are employed to designate like parts in thedifferent figures of the drawings.

The main frame A is preferably made of wood, with vertical andhorizontal members to meet and support the various operating parts ofthe machine, as seen in Figs. 1 and 2.

B is a hopper to which ore is supplied after it has been partiallycrushed by breakers in the usual manner, and O a chute to confine anddirect the ore on the revolving table D.

The supply of ore from the hopper B to the table D is regulated by anadjustable gage E, that is moved upward or downward as the Serial No.600,628.

(No model.)

quantity of ore to be fed to the machinery may require.

The table D is circular in form, set 0bliquely sloping to the front orfeeding side, and is mounted on a strong axis F. On the under side ofthis table D is a circular ledge G, gripped by the jaws I 1 (Seen inFigs. 4 and 5.)

This jaw-piece J fits loosely and turns at K on the upper end of thestem L, which latter is pivoted universally at M, so as to move in acurved path conforming to that of the table D. To the outer end of thisjaw-piece 7 is attached a link H, which, with a second link H forms atoggle with afixed pivot at N. In the middle of this toggle-joint at Ois attached a link H connecting to a crank P on the rocker-shaft Q,actuated by a second lever P and a rod S. This rod S is engaged by atappet on a stamp-stem or other reciprocating part of the crushingmachinery, and is depressed at each stroke to a certain distanceregulated by the ad j ust-ing-screw T under the lever P, whichdetermines the height to which the lever P may rise and consequently therange of movement.

Motion can be communicated from the shaft Q to the grip-piece J bydirect levers or otherwise. The method shown has been found satisfactoryin practice.

The operation is as follows: The hopper B being filled with broken oreand the crushing machinery in motion, the rod S imparts an oscillatingmotion to the shaft Q, lever P, link H and the toggle-bars or links H Hgiving a reciprocating motion to the jaw-piece J at its outer extremity,which moves in the are a c, as seen in Fig. 4, the toggle-bar H beingpivotally connected to said jaw-piece J atb, Figs.4 and 5. When this jaw-piece J is moved forward or toward a in Fig. 4, the jaws I I grip theledge G and turn the table D accordingly. lVhen the j aw-piece J ismoved backward or toward e in Fig. 4, the jaws I I are loosened by thejawpiece turning slightly on the stem L and is drawn back in thedirection e by means of a springU, attached to the lug V and seen in theside view, Fig. 2. Besides the coil-springU, I place at W a deflectingbuffer-spring to cushion the reciprocating parts at the end of theworking stroke. These movements produce an intermittent rotation of thetable D, corresponding to the stroke imparted by the toggle-bars I1 I1and as the table revolves the broken ore confined between the guides X Xescapes and falls over the edge, as shown at Y in Fig. 2, and into astamp-battery or other final crushing apparatus. It will be seen that inthis manner I attain a positive intermittent feed motion of the table Dwith a few simple devices not requiring finishing or machine-fitting.and that the wearing parts or such as would be injured by sand or gritare protected beneath the table D.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. In an ore-feeding machine, the combination of a hopper, a revolvingtable slightly inclined from a horizontal plane, on which the ore isdelivered, said table having on its under side a circular ledge, areciprocating arm J having gripping-jaws I I which engage said circularledge in one direction and slide free in the other direction, andconnections between said arm J and the reciprocating parts of themachine whereby an intermittent rotation of the said table in onedirection is obtained, substantially as and for the purpose specified.

2. In an ore-feeding machine, the combination of the hopper, therevolving table having a circular ledge on its under side, thereciprocating arm J provided with gripping jaws I I engaging saidcircular ledge, stem L loosely pivoted at its lower extremity and earrying arm J pivotally mounted thereon at its upper extremity, andconnections between the said arm J and the reciprocating parts of themachine whereby the said arm J is caused to reciprocate and thusintermittently grasp the said circular ledge with its gripping-jaws andthereby intermittently rotate the said table, substantially as and forthe purpose specified.

In an ore-feeding machine, the combination of the rotary table havingthe depend ing circular ledge, with the arm J having grippingjaws I Iengaging the said ledge, vibrating stem L supporting the said arm J,spring U, and connections between the said arm J and the reciprocatingparts of the in achine imparting a reciprocating motion to said armwhereby the said gripping-jaws intermittently operate the said ledge,and cause an intermittently forward rotation of the table, substantiallyas and for the purpose specified.

4-. In an ore-feeding machine, the combination of the hopper, the rotarytable, having the depending ledge, reciprocating arm J withgripping-jaws I I vibrating stem L, spring U, and toggle-lever and linkconnections with rocker-shaft Q and reciprocating rod S whereby the saidtable is intermittently rotated in synchronism with the movements of thestamp-mill, substantially as and for the purpose specified.

In testimony whereof I have hereunto atfixed my signature in thepresence of two wit- I IIGSSGS.

MICHEL DILLENBURG. IVitnesses:

KATE LOCKWOOD NEVINS, W. T. GRovER.

